package com.baymax.study.tuLing.netty.d1_base;

import io.netty.bootstrap.Bootstrap;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

import java.net.InetSocketAddress;

/**
 * @author baymax
 * @since 2025-06-27
 */
public class Demo1 {
    public static final int PORT = 60001;

    static class NettyServer {
        public static void main(String[] args) {
            new ServerBootstrap().group(new NioEventLoopGroup())
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new StringDecoder());
                        ch.pipeline().addLast(new SimpleChannelInboundHandler<String>() {
                            @Override
                            protected void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
                                System.out.println(msg);
                            }
                        });
                    }
                })
                .bind(new InetSocketAddress(PORT));
        }
    }

    static class NettyClient {
        public static void main(String[] args) throws InterruptedException {
            Bootstrap bootstrap = new Bootstrap();
            ChannelFuture future = bootstrap.group(new NioEventLoopGroup())
                .channel(NioSocketChannel.class)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new StringEncoder());
                    }
                })
                .connect(new InetSocketAddress("127.0.0.1", PORT))
                .sync();
            Channel channel = future.channel();
            channel.writeAndFlush("hello, netty");
            channel.close();
        }
    }

}
